Algo Duel

Which of the following data structures can be used to implement a priority queue?

• Stack

• Queue

• Heap

• LinkedList

What is the time complexity of inserting an element in a binary search tree (BST) on average?

• O(1)

• O(log n)

• O(n)

• O(n log n)

Which of the following sorting algorithms is considered stable?

• QuickSort

• MergeSort

• HeapSort

• SelectionSort

Which of the following is an example of a dynamically typed programming language?

• Java

• C

• Python

• C++

In a relational database, which of the following SQL clauses is used to group rows that have the same values in specified columns?

• WHERE

• ORDER BY

• GROUP BY

• HAVING

Which one of the following is not a characteristic of Object-Oriented Programming?

• Encapsulation

• Inheritance

• Polymorphism

• Recursion

Which of the following is used to measure the performance of an algorithm?

• Time complexity

• Data abstraction

• Binary Search

• Compilation time

In the OSI model, which layer is responsible for data encryption?

• Physical Layer

• Data Link Layer

• Network Layer

• Presentation Layer

In C programming, which of the following is a valid pointer declaration?

• intptr;

• int* ptr;

• ptrint;

• int& ptr;

Which protocols are used to retrieve emails from a remote mail server?

• SMTP

• FTP

• POP3

• HTTP